28776101 has 2 divisors, whose sum is σ = 28776102. Its totient is φ = 28776100.

The previous prime is 28776043. The next prime is 28776119. The reversal of 28776101 is 10167782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19351201 + 9424900 = 4399^2 + 3070^2 .

It is a cyclic number.

It is not a de Polignac number, because 28776101 - 2¹⁰ = 28775077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28776131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14388050 + 14388051.

It is an arithmetic number, because the mean of its divisors is an integer number (14388051).

Almost surely, 2^28776101 is an apocalyptic number.

It is an amenable number.

28776101 is a deficient number, since it is larger than the sum of its proper divisors (1).

28776101 is an equidigital number, since it uses as much as digits as its factorization.

28776101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 28776101 is about 5364.3360260148. The cubic root of 28776101 is about 306.4389623219.

The spelling of 28776101 in words is "twenty-eight million, seven hundred seventy-six thousand, one hundred one".